Ask them for references, former clients whom they've made happy! If they don't have any, you might wish to look elsewhere. Aside from that, the obvious, years of experience, and why they are working in disability law. Understand, disability law such as SSDI applications/hearings is pretty much the bottom of the barrel as far as it goes for an attorney, so you might wish to know why they are specializing in such a field, or are they even specializing, if they are moonlighting you just may wish to look elsewhere.

A few other things, the most that they can earn representing you is about $6,000, and in my considerable experience that's exactly how much effort that they will be pumping into your case, my first attorney showed up for the hearing with her entire preparation for my case(a 2.7 year wait)scribbled in pencil, on the very front page of a "palm sized" notebook! In other words my life was worth about 240 seconds of preparation on her part....So don't restrict yourself to just attorney's, try looking into professional SSD advocates, folks who are not attorneys, but experts on the system, they are oftentimes more accessible, and in my experience much better prepared at crunch time....